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JPS57107695

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DESCRIPTION JPS57107695
The present invention relates to a method of forming a speaker through plate. A method of
forming a conventionally known speaker band is described according to @ILA and -A2. (1) is a
female mold, (2) is a male mold Q-), and as shown in FIG. Insert the sheet (3) for about 8 to 6
seconds, and then insert the male mold (2) in the direction of the arrow (A) 11- \ 1 to form a
female mold i1) Since the tip (2a) of 2) first hits the central portion (8a) of the sheet (3), the
central portion (8a) first becomes cold cold 1t and stretches ri. Next, when the male mold (2) is
further moved in the direction of the arrow 諜) from such a case, the middle portion between the
central portion (81) of the sheet (3) and the peripheral portion (8b) The portion (8C) is stretched,
and in particular, the outer periphery (i) of the middle core portion (8a) or ## becomes thin, and
a punishment occurs in the extreme case. However, in this molding method, deep drawing is
impossible, and molding is not good even if odor is not deep drawn, which is a cause of outer
layer failure. In addition, in the case of a semi-rigid dVL formed by C and this forming method,
14 outside the central portion (8a) is thinner, the surface density and elastic modulus are lower
F, and the specific elastic modulus is unique. , The high region of the f characteristic is an
increase □. Accordingly, the present invention provides a method for forming a speaker through
plate which solves such problems. Hereinafter, an actual example of the present invention will be
described based on FIGS. (5) is a male mold, and a central-central 7, an item consisting of B-jJ
((7a), J-zh78R (7b) in B, (7) Succeeded EndPage: 1 frusto-conical Metal of the form: · · (6), the
head (8a) is inserted in the L1 large diameter portion (7a) and the central portion (8b) is inserted
in the small 14 portion (7b) The central mold (8), and will be). (9) is 4 gold! A guide frame fixed
to the wedge 14 is for supporting the outer peripheral mold (6) in the direction of arrow (A)
(moving in a uniform direction). (B) is a cylinder supported by the hj self-guided guide (9) in the
direction of arrows (A) (13) 5 in 4 directions, the center of which is formed in the center portion
and formed in the hole (11m) Golden wage (8) Q base end (sc) is inserted. (B) is a spring formed
in the cylinder facing surface of the outer periphery 8L type, 6) and inserted in the (4) and the ttl
K4 corresponds to the cylinder (11).
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The reconnaissance surface Q of the head (8a) of the central mold (8) is formed to be a flat
surface, and the central portion of the reconnaissance surface a4 is formed with a slight
protrusion (d). First, the top of the molding element 1 of the speaker diaphragm will be described
based on Lj self-groove formation. First of all, in the case of 1 mold in which 14 metal molds (5)
are put together, the metal molds (5) (between about 200 and 800 ° C. between ILI) are heated
to about 3 to 6 sheets. Insert the sheet (3), and then move the cylinder (b) in the direction of
arrow (A) 5 to make it JJh. Then, as shown in FIG. 8, an Iil-shaped top (6a) of the outer and mold
1'6) comes in contact with the sheet (3), and this sheet (3) is pushed into the female mold QO. At
this time, since the central mold (8) is not in contact with the central portion (a &) of the sheet
(3), the central portion (8a) is not cooled and the annular top portion (6a) is Only part (ro) is
chilled. Next, move the wedge further to the cylinder in the direction of the arrow (A) or move it,
and the tapered outer peripheral surface of the 911 mold (6) hits the sheet (3). The middle part
of the chewing sheet (3) is formed. Next, when the cylinder Ql) is further moved in the direction
of the arrow (a), as shown in FIG. 4, the cylinder (z) is compressed, and the reconnaissance
surface of the central mold (8) → outer peripheral ring and The protuberances become the
kernels that hit the central part (8a) of the sheet (3). Next, when the cylinder a9 is further moved
in the direction of the arrow φ), the central portion (8a) of the sheet (3) is cooled only at one
place corresponding to the outer peripheral edge of the projection (2) There is no center money!
(8) The speaker diaphragm is formed by being extended substantially over the entire surface
from 1 mm. As described above, according to the method for forming a speaker diaphragm of the
present invention, after forming the outer part of the sheet with the outer peripheral mold, the
central part of the sheet is formed with the central mold 6 , 従 来, 暑 中心 と と 中心 中心 中心 中
心 中心 I I I pi 消 問題 問題 問題 消 問題 問題 問題 問題)))))) 中心 中心 中心 中心 中心 暑 暑 中心
中心 中心 中心 中心 I I I I I)))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))))). Squeeze deepshrink, 1 is possible, 1 is good molding, 9 and Q to make the mantle beautiful. 従 来
Conventional, ((The outer periphery of the central part of this sheet is 4) i increase the density,
become highly metaphorical, and have f characteristics; ,. 4, Fig. 1 fIi, a brief, explanation 43 Fig.
And 2! 1 shows a conventional example, and FIG. 6 is a vertical wr straight view showing a ridge
1a before forming, and FIG. 2 is a cross-sectional view showing a state in the middle of forming.
8 and 4 refer to an example A of Honjo-cho, and FIG. 8 is a longitudinal sectional view showing a
state immediately after the start of molding, M?
The figure is a longitudinal sectional view 1 showing the shape i immediately after the start of
molding. (3) ... sheet, (Jla) ... central portion, (5) ... male mold 1.6) ... outer peripheral mold, (8) ...
central mold, (9)・ ・ ・ I do frame, scream ... female mold, 9 ・ ・ ・ ... cylinder, @ ... spring,
agent 楓 轟 EndPage: 2
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